Question

question 3
which of the following stars is the bluest?
○ a g6 star
○ a b5 star
○ an m3 star
○ an f2 star

Explanation:

Stars are classified by spectral type, with hotter stars being bluer. The spectral - type sequence (from hottest to coolest) is O, B, A, F, G, K, M. Among the given options, the B - type star (B5 star) is the hottest and thus the bluest.

Answer:

B. a B5 star